White moves as usual. Black, however, can make two moves per turn. After
his first move, the white king may be in check.

The pawns can promote to Queens.

Remarks

There's no point in defending attacked pieces - for example, with a
Black K on b5 it is foolish to play a2-a4 attacking it, hoping that the
Pawn is defended by the Rook, because Black can reply Kxa4-b5.

The lone Black K can mate - So, if you remove Pf2 and Ph2, a Black K
could move from g5 to g3, mate! In fact, if Black can check on the first
move, on the second Black will take the King, so White must not allow checks.

It's rather like the Maharajah game: it
is probably a theoretical win for White but difficult in practice.

Text by Dave Regis and Hans Bodlaender
Last modified: September 17, 1996.
﻿

Although advancing the King and Queen pawns ought to work, as you suggest, what about a double flank attack? To do so, try fianchettoing both Bishops, and then follow up by bringing the Knights out to the Rook files (A3 and H3), and then move them up for sacking on Black's pawns? In response to that kind of a strategem, it appears that throwing the Knights and Bishops away is a necessity, not a convenience. And if White tried to do that, wouldn't Black's best plan be to refrain from going forward, and instead sit around moving his King back and forth? Can either side 'pass' or is moving mandatory?